CVE-2022-28321

pam: authentication bypass for SSH logins

Published Sep 19, 2022 CVSS 3.1 · 9.8 Critical EPSS 1.6% KEV · Not listed
Description
The Linux-PAM package before 1.5.2-6.1 for openSUSE Tumbleweed allows authentication bypass for SSH logins. The pam_access.so module doesn't correctly restrict login if a user tries to connect from an IP address that is not resolvable via DNS. In such conditions, a user with denied access to a machine can still get access. NOTE: the relevance of this issue is largely limited to openSUSE Tumbleweed and openSUSE Factory; it does not affect Linux-PAM upstream.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2022-32773 The Linux-PAM package before 1.5.2-6.1 for openSUSE Tumbleweed allows authentication bypass for SSH logins. The pam_access.so module doesn't correctly restrict login if a user tries to connect from an IP address that is not resolvable via DNS. In such conditions, a user with denied access to a machine can still get access. NOTE: the relevance of this issue is largely limited to openSUSE Tumbleweed and openSUSE Factory; it does not affect Linux-PAM upstream.
Ubuntu USN Ubuntu USN USN-5825-1 PAM vulnerability
Ubuntu USN Ubuntu USN USN-5825-2 PAM regressions
History
Type Values Removed Values Added
Metrics epss

{'score': 0.00089}

epss

{'score': 0.00095}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Oct 14, 2026, 4:29 PM
Reserved
Apr 1, 2022, 12:00 AM
Status
Modified
Published
Sep 19, 2022, 10:15 PM
Modified
Oct 14, 2026, 5:17 PM
Severity
Important
Public date
Sep 19, 2022, 12:00 AM